78644840

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{7309}}^1$

素因数の和:7589

約数の個数: 32

約数和(自身を含む): 177633000

約数和(自身を除く): 98988160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 5380, 7309, 10760, 14618, 29236, 36545, 58472, 73090, 146180, 292360, 1966121, 3932242, 7864484, 9830605, 15728968, 19661210, 39322420, 78644840]

約数ペア:

[(1, 78644840), (2, 39322420), (4, 19661210), (5, 15728968), (8, 9830605), (10, 7864484), (20, 3932242), (40, 1966121), (269, 292360), (538, 146180), (1076, 73090), (1345, 58472), (2152, 36545), (2690, 29236), (5380, 14618), (7309, 10760)]